brian moore has the latest from washingto washington. >> petraeus has washington asking how and why. and the woman suddenly in the spotlight, paula broadwelsh isn't saying. back in january she was promoting a book on the general. >> he absolutely loves the agency. i think it's a great place for him. >> broadwell, an army reserve officer, had close access to the cia director. federal agents are investigating whether she had access to his e-mails or computer. >> my understanding is that the fbi's investigation into what took place on computers there did not necessarily focus on him. that came by the information by accident. >> law enforcement and multiple u.s. sources tell nbc news that e-mails between general petraeus and paula broadwell were indicative of an extra marital affair. nbc news tried but was unable to reach paula broadwell for comment. in his resignation letter released on friday, he revealed he had showed ex-really poor judgment by engaging in an extra marital affair. law enforcement officials tell nbc news that general petraeus is not under investigation and that they do